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ok, so some people I know brought up some valid points about safety with this mod.* These batteries are pulled from an old laptop and are rated at 2200ma* The screwdriver pulls about 5.5a when the collet lock is pulled, so full stall. This gives a discharge rate of 1.5 C which is inside the 2 C limit recommended.* There is no low voltage safety cut off, so you could discharge below 3v and cause a battery life issue, or if discharged lower a dangerous situation. If you do this be aware and keep it charged.
Li-on battery upgrade for cordless screwdriverView Instructable »
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